怎么会有log截图的时候不能指定名字，每次都各种奇怪的时间戳

```
def try_log_screen(screen=None, quality=None, max_size=None):
"""
Save screenshot to file

Args:
screen: screenshot to be saved
quality: The image quality, default is ST.SNAPSHOT_QUALITY
max_size: the maximum size of the picture, e.g 1200

Returns:
{"screen": filename, "resolution": aircv.get_resolution(screen)}

"""
if not ST.LOG_DIR or not ST.SAVE_IMAGE:
return
if not quality:
quality = ST.SNAPSHOT_QUALITY
if not max_size:
max_size = ST.IMAGE_MAXSIZE
if screen is None:
screen = G.DEVICE.snapshot(quality=quality)
filename = "%(time)d.jpg" % {'time': time.time() * 1000}
filepath = os.path.join(ST.LOG_DIR, filename)
if screen is not None:
aircv.imwrite(filepath, screen, quality, max_size=max_size)
return {"screen": filename, "resolution": aircv.get_resolution(screen)}
return None
```